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... -5 ^ 2 = 25, not -25 !!!!

This calculator gets it wrong even if I do 5 * -1 = -5  ^ 2

Guest Mar 25, 2015

Best Answer 

 #1
avatar+88775 
+5

Sorry, but

-5^2  = -1(5)^2 = -1*25 = -25

The exponent only applies to the 5, not to the "understood" -1 out front.

Note however.......

(-5)^2  = (-1*5)^2  = (-1)^2*(5)^2 = 1 * 25  = 25

The exponent applies to both the 5 and the "understood" -1 in front.

 

  

CPhill  Mar 25, 2015
 #1
avatar+88775 
+5
Best Answer

Sorry, but

-5^2  = -1(5)^2 = -1*25 = -25

The exponent only applies to the 5, not to the "understood" -1 out front.

Note however.......

(-5)^2  = (-1*5)^2  = (-1)^2*(5)^2 = 1 * 25  = 25

The exponent applies to both the 5 and the "understood" -1 in front.

 

  

CPhill  Mar 25, 2015

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